CN114859641A - Laser vibration arm for PET and PC screen - Google Patents

Abstract

The invention discloses a laser vibration arm for a PET (polyethylene terephthalate) and PC (polycarbonate) screen, which comprises an electromagnet, wherein a connecting plate is arranged on the electromagnet, a fixing groove is formed in the connecting plate, an L-shaped plate is arranged on the connecting plate, a sliding rail is arranged on the L-shaped plate through a bolt, a sliding block is sleeved on the sliding rail, the bottom of the sliding block is fixedly connected with a buckle through a bolt, the opening of the buckle is connected through a bolt, an adjusting bolt is arranged at the top of the sliding block, and a magnet is arranged on the electromagnet in a matched mode. Compared with the prior art, the invention has the advantages that: the control box of the screen laser speckle eliminating system can adjust the vibration state of the electromagnet, and the maximum adjustable range of the vibration frequency is between 30 Hz and 100 Hz. The maximum adjustable range of the voltage of the electromagnet is between 10V and 48V. Therefore, the screen can be adjusted in accordance with various tension conditions, so that the vibration capability can reach the optimal state. The problem of screen laser speckle is perfectly solved, and the method has good market prospect.

Description

Be used for PET and PC material screen laser vibration arm

Technical Field

The invention relates to the field of projection, in particular to a laser vibration arm for a PET (polyethylene terephthalate) and PC (polycarbonate) screen.

Background

With the popularization of RGB laser projectors in theaters, the problem of speckle caused by laser light impinging on metal screens has received attention from both the theaters and the viewers. Speckle is due to the phenomenon of granular structure on the surface of the screen after the screen is irradiated by laser. This speckle phenomenon interferes with the picture quality of the film and affects the film projection.

This problem is also present in the new PET and PC screens that have been introduced on the market in recent years. The screen laser speckle reduction system designed by us is developed for this type of screen.

In order to overcome the laser speckle phenomenon, the mainstream method is to vibrate the surface of the screen to be irradiated, change the state of laser reflection, and eliminate the granular structure.

The main methods on the market are: a micro vibration motor scheme, a screen frame vibration scheme, a low-frequency sound wave vibration scheme, a screen edge vibration scheme and the like. These solutions have certain drawbacks.

Micro vibration motor scheme: the miniature vibration motor is adhered to the back of the screen by a double-sided adhesive tape, and the vibration of the motor drives the surface of the screen to vibrate together.

The biggest problems of this vibration mode are two:

1. because PET and PC material screen are compared traditional screen, the texture is harder, so lead to the difficult transmission of motor vibration energy, and the range of action is little. In order to vibrate the entire screen, a large number of motors are required to be installed.

2. Although the motor can change the vibration capability by adjusting the current intensity, the vibration frequency of the motor cannot be changed. The applicability of the motor is greatly reduced due to the differences in screen tension for each item and the different requirements for vibration force and frequency.

Screen frame vibration scheme: and a vibration device is arranged on the frame for mounting the screen to drive the whole frame to vibrate. The problem of this scheme lies in that installation cost is high, and the installation degree of difficulty is big.

Low-frequency sound wave vibration scheme: the low-frequency loudspeaker is arranged at the back of the screen, and the low sound wave emitted by the loudspeaker drives the air to vibrate, so that the surface of the screen vibrates. The defect of the scheme is that the loudspeaker can generate noise to influence the appearance of the film. Because the air of vibration point position is activated, lead to the dust in the air to be beaten on the screen surface easily, the screen surface forms thick dust after long-time the use and piles up, causes the screen pollution.

Screen edge vibration scheme: install the vibrator around the screen, through patting the screen, let the vibration from spreading to whole screen all around. The biggest problem of the scheme is that most of the vibration energy is distributed around the screen, so that the main viewing area at the central position of the screen cannot be taken care of.

Disclosure of Invention

The invention aims to solve the technical problem of providing a laser vibration arm for PET and PC screen.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a be used for PET and PC material screen laser vibration arm, includes the electro-magnet, be equipped with the connecting plate on the electro-magnet, be equipped with the fixed slot on the connecting plate, install the L template on the connecting plate, install the slide rail through the bolt on the L template, the cover is equipped with the slider on the slide rail, and bolt fixedly connected with buckle is passed through to the slider bottom, and the buckle opening part passes through bolted connection, and adjusting bolt is installed at the slider top, and magnet is installed in the cooperation on the electro-magnet.

As the improvement, the slide rail is a concave slide rail, and the pulley block is installed at the concave joint of the slide block and the slide rail and used for reducing friction force.

As the improvement, the buckle is split type articulated buckle, two C type rings, and articulated the connection is adopted to one end, and the other end adopts the bolt fastening, and the buckle is used for being connected with the screen frame horizontal pole, adopts the electro-magnet to vibrate, has guaranteed the holistic stability of vibration arm to the accurate nature of electro-magnet vibrations has been guaranteed.

As an improvement, the voltage regulation range of the electromagnet is 10V-48V.

As an improvement, the diameter of the magnet is 15mm, and the height of the magnet is 5mm, and magnets of other specifications can be customized according to actual requirements.

Compared with the prior art, the invention has the advantages that: the control box of the screen laser speckle eliminating system can adjust the vibration state of the electromagnet, and the maximum adjustable range of the vibration frequency is between 30 Hz and 100 Hz. The maximum adjustable range of the voltage of the electromagnet is between 10V and 48V. Therefore, the screen can be adjusted in accordance with various tension conditions, so that the vibration capability can reach the optimal state. The problem of screen laser speckle is perfectly solved, and the method has good market prospect.

Drawings

FIG. 1 is a schematic view of a laser vibrating arm for PET and PC screen.

FIG. 2 is a schematic structural diagram of a laser vibrating arm for PET and PC screen.

FIG. 3 is an exploded view of a slider for a laser vibrating arm for PET and PC screens.

As shown in the figure: 1. the device comprises an electromagnet, 2, a connecting plate, 3, a fixing groove, 4, an L-shaped plate, 5, a sliding rail, 6, a sliding block, 7, a buckle, 8, a bolt, 9, an adjusting bolt, 10, a pulley block, 11 and a magnet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

When the laser vibration arm is specifically implemented, the laser vibration arm for the PET and PC screen comprises an electromagnet 1, wherein a connecting plate 2 is arranged on the electromagnet 1, a fixing groove 3 is formed in the connecting plate 2, an L-shaped plate 4 is arranged on the connecting plate 2, a sliding rail 5 is arranged on the L-shaped plate 4 through a bolt, a sliding block 6 is sleeved on the sliding rail 5, the bottom of the sliding block 6 is fixedly connected with a buckle 7 through the bolt, an opening of the buckle 7 is connected through the bolt 8, an adjusting bolt 9 is arranged at the top of the sliding block 6, and the electromagnet 1 is provided with a connecting plate 11, an L-shaped plate, a sliding rail, a sliding block and a buckle in a matched mode and is realized through a bolt structure.

As an improvement, the sliding rail 5 is a concave sliding rail, the pulley block 10 is installed at the concave connection position of the sliding block 6 and the sliding rail 5 and used for reducing friction force, the sliding efficiency can be effectively improved by the adoption of the structure, and the whole vibrating arm is more efficient and faster.

As the improvement, buckle 7 is split type articulated buckle, two C type rings, and one end adopts articulated connection, and the other end adopts the bolt fastening, and buckle 7 is used for being connected with the screen frame horizontal pole, adopts the electro-magnet to vibrate, has guaranteed the holistic stability of vibration arm to the accurate nature of electro-magnet vibrations has been guaranteed.

As an improvement, the voltage regulation range of the electromagnet 1 is 10V-48V.

As a modification, the diameter of the magnet 11 is 15mm, and the height thereof is 5mm, and magnets of other specifications may be customized according to actual requirements.

The working principle of the invention is as follows: each vibration point of the screen laser speckle eliminating system has strong vibration force and wide action coverage. The installation of ordinary vibrating motor, on a screen of 15 meters width, 8 meters height, need install 25 motors, and screen laser speckle elimination system only needs to install 3 position.

The maximum adjustable range of the vibration frequency is between 30 Hz and 100 Hz. The maximum adjustable range of the voltage of the electromagnet is between 10V and 48V. Therefore, the screen can be adjusted in accordance with various tension conditions, so that the vibration capability can reach the optimal state.

The volume of the permanent magnet at each vibration point is very small, the diameter is only 15mm, and the height is 5 mm. The influence on the screen is very small when the film is stuck on the back of the screen, and the surface pollution of the screen can not be caused.

The screen laser speckle eliminating system is small in design and flexible in installation. Can be arranged at any position behind the screen, and can directly act on the main film watching area, thereby avoiding wasting vibration energy.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless explicitly specifically defined otherwise.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (5)

1. The utility model provides a be used for PET and PC material screen laser vibration arm, includes electro-magnet (1), its characterized in that: be equipped with connecting plate (2) on electro-magnet (1), be equipped with fixed slot (3) on connecting plate (2), install L template (4) on connecting plate (2), install slide rail (5) through the bolt on L template (4), the cover is equipped with slider (6) on slide rail (5), there is buckle (7) slider (6) bottom through bolt fixedly connected with, buckle (7) opening part passes through bolt (8) and connects, adjusting bolt (9) are installed at slider (6) top, magnet (11) are installed in the cooperation on electro-magnet (1).

2. The laser vibrating arm for PET and PC screen according to claim 1, wherein: the sliding rail (5) is a concave sliding rail, and a pulley block (10) is arranged at the concave connection part of the sliding block (6) and the sliding rail (5) and used for reducing friction force.

3. The laser vibrating arm for PET and PC screen according to claim 1, characterized in that: buckle (7) are split type articulated buckle, two C type rings, and one end adopts articulated connection, and the other end adopts the bolt fastening, and buckle (7) are used for being connected with the screen frame horizontal pole.

4. The laser vibrating arm for PET and PC screen according to claim 1, wherein: the voltage regulation range of the electromagnet (1) is 10V-48V.

5. The laser vibrating arm for PET and PC screen according to claim 1, wherein: the diameter of the magnet (11) is 15mm, and the height of the magnet is 5 mm.

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